As Cissy Houston, mother of Whitney Houston begins promoting her upcoming memoir "Remembering Whitney"; she reveals to People Magazine that she's always wondered if she could have saved her daughter.

Cissy Houston, mother of Whitney Houston has always wondered if she had been a good enough mother and if there was anything she could have done to save her daughter. In February 2012, the legendary singer Whitney Houston died from accidently drowning in a hotel bathroom bath tub. Reportedly she was on a high dose of cocaine. Her mother told People magazine that she wonders if she could have done anything to save her daughter from the use of drugs, which was elementary in causing her death.

"Was I a good mother?" Cissy Houston, 79, was quoted as telling the celebrity magazine in an advance excerpt released on Wednesday from the magazine's Friday edition. "I still wonder if I could have saved her somehow. But there's no book written on how to be a parent. You do the best you can."

Cissy also revealed that she was not aware of Nippy's (Whitney Houston's pet name at home) early "partying" days. She says that she was to blame because back then she didn't even want to know what her daughter was up to.

Cissy also spoke about Houston's ex-husband Bobby Brown and revealed that he too had a drug problem so didn't help her daughter much. The Grammy-winning singer left behind her only child, Bobbi Kristina, 19, who was hospitalized twice with anxiety after her mother's death.

Last fall, Cissy, Bobbi Kristina, the singer's brother and sister-in-law starred in a 14-episode reality show for cable channel Lifetime about their struggle to cope after Houston's death called "The Houstons: On Our Own."

Houston told the magazine she was "worried" about granddaughter Bobbi Kristina and "trying to make sure she doesn't (follow the same path)" as her famous mother.

Cissy Houston's interview with People, and excerpts from her memoir, can be found in the issue which reaches newsstands on January 25.